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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [RFC] create a single workqueue for each vm to update vm irq routing table |
Date: | Tue, 26 Nov 2013 16:28:34 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130923 Thunderbird/17.0.9 |
Il 26/11/2013 16:25, Avi Kivity ha scritto: >> If we want to ensure, we need to use a different mechanism for >> synchronization than the global RCU. QRCU would work; readers are not >> wait-free but only if there is a concurrent synchronize_qrcu, which >> should be rare. > > An alternative path is to convince ourselves that the hardware does not > provide the guarantees that the current code provides, and so we can > relax them. No, I think it's a reasonable guarantee to provide. Paolo
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